Increased Numbers of NK Cells, NKT-Like Cells, and NK Inhibitory Receptors in Peripheral Blood of Patients with Chronic Obstructive Pulmonary Disease

Table 1

Clinical and laboratory characteristics of the COPD patients and HNS.

Characteristic	HNS (𝑛=12)	COPD (𝑛=19)
Male/female	6/6	10/9
Age (years)	54.75±6.47	55.84±5.72
Onset time (years)	0	20±7.41
WBC count (×10^9/L)	5.22±1.02	6.04±1.76
FEV1 (%)	88.28±6.13	46.02±14.20^∗
FEV1/FVC ratio	76.69±2.69	55.3±8.60^∗
Hyperinflation/enhancement of pulmonary markings	0	19

Data are shown as average ± SD; WBC: white blood cell count, FEV₁: forced expiratory volume in one second, FVC: forced vital capacity, ^∗𝑃<0.05 versus the HNS.